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Now showing items 41-50 of 227
Alexandria folio, South Dakota
(Geological Survey (United States), 1903)
Mount Mitchell folio, North Carolina-Tennessee
(Geological Survey (United States), 1905)
Washington folio, District of Columbia-Maryland-Virginia
(Geological Survey (United States), 1901)
Hollidaysburg-Huntingdon folio, Pennsylvania
(Geological Survey (United States), 1945)
Gaffney-Kings mountain folio, South Carolina-North Carolina
(Geological Survey (United States), 1931)
Pocahontas folio, Virginia-West Virginia
(Geological Survey (United States), 1896)
Penobscot Bay folio, Maine
(Geological Survey (United States), 1907)
Birmingham folio, Alabama
(Geological Survey (United States), 1910)
Tenmile district special folio, Colorado
(Geological Survey (United States), 1898)
Barnesboro-Patton folio, Pennsylvania
(Geological Survey (United States), 1913)